EP0278841A1 - Aufhängung mit Federn verschiedener Art mit Höhenregelung und Dämpfungsregelung für eine Kraftfahrzeugachse - Google Patents
Aufhängung mit Federn verschiedener Art mit Höhenregelung und Dämpfungsregelung für eine Kraftfahrzeugachse Download PDFInfo
- Publication number
- EP0278841A1 EP0278841A1 EP88400194A EP88400194A EP0278841A1 EP 0278841 A1 EP0278841 A1 EP 0278841A1 EP 88400194 A EP88400194 A EP 88400194A EP 88400194 A EP88400194 A EP 88400194A EP 0278841 A1 EP0278841 A1 EP 0278841A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- damper
- piston
- carrier element
- accumulator
- hydropneumatic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/54—Arrangements for attachment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/06—Characteristics of dampers, e.g. mechanical dampers
- B60G17/08—Characteristics of fluid dampers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/12—Mounting of springs or dampers
- B60G2204/128—Damper mount on vehicle body or chassis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/12—Mounting of springs or dampers
- B60G2204/129—Damper mount on wheel suspension or knuckle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/416—Ball or spherical joints
Definitions
- the present invention relates to a mixed axle suspension of a motor vehicle comprising, mounted in parallel, elastic metallic means and elastic hydropneumatic means.
- Automotive axle suspensions with metal springs are difficult to adjust for height so that the axle height depends on the load as well as the stiffness and damping characteristics.
- suspensions with metal springs have advantages; thus, they generally admit higher natural frequencies than hydropneumatic suspensions thus giving an impression of rigidity.
- the elastic hydropneumatic means are composed of a carrier element which comprises a piston mounted sliding in a cylinder hydraulically connected to a suspension accumulator; these mixed suspensions also include height correction means and damping means acting on the elastic hydropneumatic means.
- the subject of the present invention is a mixed suspension of this kind in which the damping can be varied as a function of various driving parameters without modifying the rigidity.
- damping means are with valves and comprise a first damper mounted on the piston of the carrier element and a second damper mounted fixed at the inlet of the hydropneumatic accumulator, this second damper being associated to a hydraulic slide valve admitting a first position in which it directly connects the carrier element to the accumulator and a second position in which it connects the carrier element to the accumulator by passing through the damper, and means for moving the drawer in function of a driving parameter.
- the effect of the metallic elastic means is independent of the load given the presence of the height corrector.
- a variation of the load thus acts only on the hydropneumatic elastic means.
- Damping is normally achieved by the damper mounted on the piston of the carrier element. But when a desired criterion intervenes, for example the speed of the vehicle, a stroke of the steering wheel, acceleration or braking, the damper incorporated in the hydropneumatic accumulator comes into action and increases the damping.
- the presence of dampers with valves enables a correct pressure-flow characteristic to be obtained, which would not be the case with jet dampers.
- the cylinder of the carrier element is hydraulically connected to the accumulator on the side opposite to the piston rod and the piston is mounted peripherally sealed with the damper, hydraulic connections making communicate through the shock absorber on both sides of the piston.
- a rear axle comprising for each wheel an upper triangle 1 which is pivotally mounted at 2 on the body 3 of the vehicle, and a lower triangle 4 which is pivotally mounted at 5 on this body.
- the two triangles 1 and 4 are connected to each other, at their ends, by the wheel pivot 6.
- the suspension is provided on the one hand by a metal compression spring 7 which is interposed between the body 3 and the lower triangle 4, and on the other hand by a supporting element which is generally designated in the drawing by the reference 8 and is articulated respectively at 9 and 10 on the body 3 and on the triangle 4.
- the carrier element 8 is constituted by a cylinder 11 inside which a piston rod 12 can slide, the seal being provided by a plastic seal 13 and a elastomer O-ring 14 on the high pressure side and with an elastomer O-ring 15 and a felt seal 16 on the low pressure side.
- a housing 17 Inside the bearing 20 is crimped a damper 23 with valves fitted of an axial calibrated bore, of the kind shown in FIG. 1 of patent FR 2 088 803, on this damper 23, a valve 24 is slightly under tension, the lifting of this valve being limited by a stop 25; the valve 24 is pierced with a hole 24 a smaller than that drilled in the axis of the damper 23.
- the liquid passes through the hole 24 a while in the attack direction, the valve moves away from the damper, being limited in its stroke by the stop 25, and the liquid can pass through the larger hole of the axis of the damper.
- This head has a bore which receives a ball joint 28, held in place by circlips 29; two double lip seals 30 protect the ball joint from water splashes and dust.
- Two sockets 31 are used for fixing to the body 3 of the vehicle.
- the head 26 comprises a conduit 32 which ends in a thread where a flexible connection 33 is fixed to a suspension sphere 34.
- a rubber expansion stop 35 limits the expansion stroke.
- the stop comes to rest on a plastic washer 36 arranged to let the liquid pass through holes 37 and 38.
- a dust cover 39 covers the lower part of the cylinder and is held in place by the double tightening collar 40.
- This barrier -dust includes a first return nipple 4l and a second nipple venting to the atmosphere 42 in a place protected from dust, so as to allow breathing of the dust cover which completely envelops the patella in placing in the two grooves two washers 43 which are used for attachment to the vehicle.
- the suspension sphere 34 is screwed onto a support 44, the seal being provided by a seal 45 (see Figure 4).
- This support has three holes 46 used for fixing it to the structure of the vehicle.
- a damper 47 held in place by a nut 48; this damper has a constitution similar to that of the damper 23, that is to say that it is of the valve type.
- a drawer 49 normally held in abutment on a connector 50 by a spring 51, itself centered by a cup 52, puts in communication the inlet orifice 53 of the liquid coming from the flexible conduit 33 and the carrier element 8 with a conduit 54 leading to the suspension sphere.
- the conduit 55 leading to the damper 47 is closed by the drawer 49.
- the spring 51 is held by a plug 56 secured to the support 44 by a ring 57 and sealed by a seal 58.
- a stop 59 limits the stroke of the drawer 49.
- a wash bottle 60 allows the return of seepage from the drawer to the tank 61.
- a connector 62 receives the pipe tion coming from the pump 63.
- the connector 50 sealed by a seal 64 is connected to the pump 63 by a solenoid valve 65.
- An electronic sensor 73 mechanically linked to the middle of the anti-roll bar 74 is connected to the motor 72 and to the solenoid valve 70 so as to put the motor 72 into service, therefore the pump 63, if the vehicle is too low, or to open the solenoid valve 70 if the vehicle is too high.
- the metal spring 7 is defined so that it takes only about 80% of the load in running order, or about 150 daN at each wheel; it will never take a higher load since the sensor 73 keeps the height of the vehicle constant.
- the load-bearing element 8 takes into account the remainder of the load in running order, ie 20% of this load; moreover it takes into account the loads going from the load in running order to the limit load, which determines a hydraulic pressure of about 28 bars in running order and 118 bars under limit load.
- the damping effect produced by the damper 23 is different in expansion, the liquid having to pass through the small hole 24 has valve 24 which is applied to the damper 23, and in attack , the liquid can then pass through the larger axial hole of the damper.
- the solenoid valve 65 When the solenoid valve 65 is closed, the slide 49 is held by the spring 51 bearing on the connector 50, position in which the connector 53 is directly in communication with the suspension sphere 34. On the other hand, if this electro- valve is open, the slide moves against the action of the spring 51 and comes to occupy a position in which the connector 53 is isolated from the bore 54 and placed in communication with the bore 55; the liquid must therefore pass through the damper 47 to go from the element 8 to the suspension sphere 34 or vice versa. This damper adds an additional damping force in attack and rebound to that provided by the damper 23.
- the solenoid valve 65 can be controlled for example as a function of the speed of the vehicle, the angle or the swivel speed of the steering wheel to avoid too great a roll angle, of the accelerator to avoid nose-up, or of the brake to avoid diving.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8701297A FR2610255B1 (fr) | 1987-01-29 | 1987-01-29 | Suspension mixte a hauteur constante avec amortissement variable pour essieu de vehicule automobile |
FR8701297 | 1987-01-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0278841A1 true EP0278841A1 (de) | 1988-08-17 |
EP0278841B1 EP0278841B1 (de) | 1990-08-08 |
Family
ID=9347545
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19880400194 Expired - Lifetime EP0278841B1 (de) | 1987-01-29 | 1988-01-28 | Aufhängung mit Federn verschiedener Art mit Höhenregelung und Dämpfungsregelung für eine Kraftfahrzeugachse |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0278841B1 (de) |
DE (1) | DE3860395D1 (de) |
FR (1) | FR2610255B1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2665669A1 (fr) * | 1990-08-08 | 1992-02-14 | Peugeot | Suspension hydropneumatique de vehicule automobile. |
EP0741051A2 (de) * | 1995-05-01 | 1996-11-06 | Toyota Jidosha Kabushiki Kaisha | Radaufhängung für ein Kraftfahrzeug und elektrische Steuervorrichtung derselben |
EP0893289A1 (de) * | 1997-07-23 | 1999-01-27 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Trägerstruktur für Zylinder |
RU2657066C2 (ru) * | 2013-01-11 | 2018-06-08 | Кнорр-Бремзе Зюстеме Фюр Нутцфарцойге Гмбх | Клапан, клапанный узел и способ сборки клапанного узла |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117261515B (zh) * | 2023-11-22 | 2024-02-02 | 山西佳诚液压有限公司 | 一种非公路矿用自卸车前油气悬挂缸 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE556891A (de) * | 1956-06-25 | |||
FR2088803A5 (de) * | 1970-04-24 | 1972-01-07 | Citroen Sa | |
US3945626A (en) * | 1974-02-08 | 1976-03-23 | Yamaha Hatsudoki Kabushiki Kaisha | Vehicular springing means |
FR2427923A1 (fr) * | 1978-06-08 | 1980-01-04 | Honda Motor Co Ltd | Dispositif antiroulis pour vehicules |
DE3427843A1 (de) * | 1983-07-29 | 1985-02-14 | Tokico Ltd., Kawasaki, Kanagawa | Hydro-pneumatische aufhaengvorrichtung |
EP0176390A1 (de) * | 1984-09-06 | 1986-04-02 | Automobiles Peugeot | Federungsvorrichtung mit einstellbarem Biegsamkeits- und Dämpfungsverhalten |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5214182A (en) * | 1975-07-24 | 1977-02-02 | Showa Mfg Co Ltd | Attenuation force generating valve device of an oil pressure shock abs orber |
JPS5514337A (en) * | 1978-07-14 | 1980-01-31 | Honda Motor Co Ltd | Oil hydraulic damper for vehicle |
-
1987
- 1987-01-29 FR FR8701297A patent/FR2610255B1/fr not_active Expired - Fee Related
-
1988
- 1988-01-28 DE DE8888400194T patent/DE3860395D1/de not_active Expired - Fee Related
- 1988-01-28 EP EP19880400194 patent/EP0278841B1/de not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE556891A (de) * | 1956-06-25 | |||
FR2088803A5 (de) * | 1970-04-24 | 1972-01-07 | Citroen Sa | |
US3945626A (en) * | 1974-02-08 | 1976-03-23 | Yamaha Hatsudoki Kabushiki Kaisha | Vehicular springing means |
FR2427923A1 (fr) * | 1978-06-08 | 1980-01-04 | Honda Motor Co Ltd | Dispositif antiroulis pour vehicules |
DE3427843A1 (de) * | 1983-07-29 | 1985-02-14 | Tokico Ltd., Kawasaki, Kanagawa | Hydro-pneumatische aufhaengvorrichtung |
EP0176390A1 (de) * | 1984-09-06 | 1986-04-02 | Automobiles Peugeot | Federungsvorrichtung mit einstellbarem Biegsamkeits- und Dämpfungsverhalten |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN, vol. 1, no. 65 (M-77)[968], 24 juin 1977; & JP-A-52 014 182 (SHOWA SEISAKUSHO K.K.) 02.02.1977 * |
PATENT ABSTRACTS OF JAPAN, vol. 4, no. 45 (M-6)[527], page 4 M 6; & JP-A-55 014 337 (HONDA GIKEN KOGYO K.K.) 31.01.1980 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2665669A1 (fr) * | 1990-08-08 | 1992-02-14 | Peugeot | Suspension hydropneumatique de vehicule automobile. |
EP0741051A2 (de) * | 1995-05-01 | 1996-11-06 | Toyota Jidosha Kabushiki Kaisha | Radaufhängung für ein Kraftfahrzeug und elektrische Steuervorrichtung derselben |
EP0741051A3 (de) * | 1995-05-01 | 1999-01-13 | Toyota Jidosha Kabushiki Kaisha | Radaufhängung für ein Kraftfahrzeug und elektrische Steuervorrichtung derselben |
EP0893289A1 (de) * | 1997-07-23 | 1999-01-27 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Trägerstruktur für Zylinder |
US6331010B1 (en) | 1997-07-23 | 2001-12-18 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Structure for supporting cylinders |
RU2657066C2 (ru) * | 2013-01-11 | 2018-06-08 | Кнорр-Бремзе Зюстеме Фюр Нутцфарцойге Гмбх | Клапан, клапанный узел и способ сборки клапанного узла |
Also Published As
Publication number | Publication date |
---|---|
FR2610255A1 (fr) | 1988-08-05 |
EP0278841B1 (de) | 1990-08-08 |
FR2610255B1 (fr) | 1991-06-21 |
DE3860395D1 (de) | 1990-09-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0360631B1 (de) | Hydropneumatische Radaufhängung für ein Kraftfahrzeug | |
EP0280824B1 (de) | Stossdämpfer für Fahrzeug mit Luftfederung, speziell für Lastkraftwagen | |
JP4800172B2 (ja) | 自動二輪車 | |
EP1578626A1 (de) | Radträgervorrichtung mit dreifachscharnier, aufhängungsvorrichtung und kraftfahrzeug mit einer solchen trägervorrichtung | |
EP0255412B1 (de) | Hydropneumatische Aufhängung für ein Kraftfahrzeug | |
EP0354113B1 (de) | Vorrichtung zur Lageregelung eines Kraftfahrzeuges | |
FR2573365A1 (fr) | Suspension pour vehicule | |
FR2868493A1 (fr) | Dispositif de suspension a amortisseur hydraulique a controle d'amortissement selectif | |
FR3050496A1 (fr) | Systeme de suspension hydraulique d'un vehicule | |
EP0278841B1 (de) | Aufhängung mit Federn verschiedener Art mit Höhenregelung und Dämpfungsregelung für eine Kraftfahrzeugachse | |
FR2670716A1 (fr) | Dispositif de securite monte sur un verin hydraulique d'anti-roulis actif. | |
EP0208572B1 (de) | Automatischer Rollenstabilisator | |
EP0264324B1 (de) | Automatisch regelbare Dämpfungsvorrichtung | |
EP0430746B1 (de) | Abstützvorrichtung, insbesondere für die Achse einer Hinterradaufhängung an der Karosserie eines Kraftfahrzeuges | |
EP0118335B1 (de) | Hydropneumatische Aufhängung mit totaler Dämpfung | |
EP3194190B1 (de) | Strebe mit einer luftfeder, bei der ein kolben gegen das ende eines stossdämpferkörpers wirkt | |
EP0161147A1 (de) | Dämpfungszylinder für oleopneumatische Fahrzeugaufhängung | |
FR2573701A1 (fr) | Suspension pneumatique | |
FR3086359A1 (fr) | Amortisseur hydraulique avec butee hydraulique de fin de course a positionnement auto-ajustable | |
FR2559715A1 (fr) | Systeme hydropneumatique de hauteur reglable pour un vehicule | |
EP0390670B1 (de) | Automatisch veränderliche Dämpfungsvorrichtung | |
FR2654992A1 (fr) | Suspension de vehicule. | |
FR2565170A1 (fr) | Suspension hydropneumatique avec correction de niveau pour vehicules | |
FR2722451A1 (fr) | Systeme de suspension active pour une roue de vehicule automolbile | |
FR2647062A1 (fr) | Train de roues a verin hydraulique et vehicule de transport lourd en faisant application |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE GB IT |
|
17P | Request for examination filed |
Effective date: 19880901 |
|
17Q | First examination report despatched |
Effective date: 19890417 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE GB IT |
|
ITF | It: translation for a ep patent filed |
Owner name: JACOBACCI & PERANI S.P.A. |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
REF | Corresponds to: |
Ref document number: 3860395 Country of ref document: DE Date of ref document: 19900913 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
ITTA | It: last paid annual fee | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19960120 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19960123 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19970128 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19970128 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19971001 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050128 |